1) effective aperature
有效口径
2) aperture efficiency
口径效率
1.
However, aperture efficiency of the antenna is not ideal.
此外,采用径向线作为馈电波导实现了天线轴向尺寸的小型化,然而天线的口径效率不太理想,同时,在某些特定应用场合,有限的空间不仅要求天线的轴向尺寸短,同时还要求其横向尺寸要小,尤其是在低频段,因此本文围绕天线的口径效率,开展了L波段高功率径向线螺旋阵列天线的小型化研究,分两种情况进行了研究,一种是口径给定的天线研究,另一种是口径不定的天线研究,主要工作包括:首先,围绕增益、轴比等参量完成了L波段辐射单元天线的优化设计;然后,对给定口径(320mm)的阵列天线进行了设计,通过对阵列布局的优化设计提高了该口径上阵列天线的增益,设计了6元均匀单圆环阵,单元间距为0。
2.
The configuration parameters of the element and the layout of array antenna are optimized with the purpose of enhancing the aperture efficiency of the antenna.
以提高阵列天线的口径效率为目标,对辐射单元及阵列布局进行了优化,设计了中心频率为1。
3.
Factor which affected the aperture efficiency is analyzed,and then the aperture efficiency using three approaches is optimized;at the same time,the array cell structure is adjusted to reduce the reflection,so the character of array antenna is improved,putting it to practice.
分析了影响阵列天线口径效率的因素,通过三种途径优化了口径效率;同时对单元天线进行适当的优化,减小了阵列天线的反射,提高了阵列天线的整体性能,使其更好地应用于实际。
3) effective way
有效途径
1.
An effective way of raising immigrants income - export of labor services;
劳务输出是提高移民收入的有效途径
2.
Two effective ways of small valley comprehensive regulation in Wuchang City;
五常市小流域综合治理中的两条有效途径
3.
The Effective Way of Increasing Peasants Income by Future Market;
间接广泛利用期货市场:农民增收的有效途径
4) effective diameter
有效直径
1.
The impurities in solution affect the measure accuracy of effective diameter and polydispersity in nano-particle size measurement by photon correlation spectroscopy.
为了研究光子相关光谱法测粒技术中,溶液介质中的杂质对纳米颗粒有效直径和分散度测量准确性的影响,获取并分析了3种超纯水蒸发后残留杂质的显微图像,讨论了上述3种水对标称直径为960、340、90、60nm的颗粒物测定结果的影响。
2.
Has inferred the formula of ball milling cutter\'s effective diameter and the effective linear velocity,by this further definite spindle speed.
推导了球头铣刀的有效直径和有效线速度的计算公式,以此进一步确定转速,通过试验的方法测定了径向铣削深度和每齿进给量对表面粗糙度的影响。
5) effective ways
有效途径
1.
Analysis of the factors affecting the level of rock gangway single pierce,introduced by raising the level of equipment and optimize processes,processes,human resources reasonably effective ways to promote a single single pierce into raising the level and the results achieved.
分析了影响岩巷单进水平因素,介绍了通过提高装备水平,优化工艺、工序,合理人力资源配置等有效途径,促进了单进水平的提高,以及所取得效果。
2.
According to the state of geology structure complex,thin and unstable coal and low mining ratio,six effective ways of raising mining rate are expouned.
针对福建省煤田地质构造复杂，煤层薄且不稳定，资源采出率低的现状，经实践经验总结，论述了六种提高资源采出率的有效途径，供地质条件相似矿井借鉴。
3.
Starting from idea, element and function of ecological architecture, it discusses relative problems & effective ways to accelerate ecological architecture according to scientific developing view which is centralized by people, harmonic and sustainable so as to accelerate faster development of ecological architecture.
从生态建筑的理念、要素、性能入手 ,按照以人为本、协调可持续的科学发展观 ,对推进生态建筑相关问题和有效途径作了论述 ,以更快地推进生态建筑的发
6) effective size
有效粒径
1.
The results shows that the effective size and uniform coefficient for SP-1,SP-2 and SP-C are respectively 161.
结果表明:SP-1有效粒径为161。
2.
In accordance with the effective size of nature soil conforming wostly with normal distribution, the physical signification and existing problem on the grading index of the soil grain are discussed.
针对天然土中粒径分布大多符合对数正态分布这一事实，在土粒级配曲线近似为正态分布这一前提下，探讨了目前广泛采用的粒度分析中级配指标的物理意义及其存在的问题，并提出了划分有效粒径的方法。
补充资料：次大口径成品油管道(见大口径原油管道)
次大口径成品油管道(见大口径原油管道)
small big inch products pipeline
次大口径成品油管道比m“，。彬duet、pipeline)见大。径原油管道。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条